Waveform showing details of syllable
types I, II, and III in a song of A. arenicola. The type of syllable
sequence and the number of syllables shown are indicated at the bottom of
the figure. Immediately beneath the waveform are symbols
indicating the wing movements that probably cause the sounds within each
syllable:
C (close),
C1 (first part of
two-part close),
C2 (second part of
two-part close), and
O (open).